You have a pus-like discharge from the urethra (or vagina). You probably have

According to Dr. Lyles, a person can only develop PTSD from his/her own experiences.

a. true b. false

In the context of the "three Rs" of animal research, refinement refers to ____

a. reducing pain and discomfort b. recognizing potential confounders c. reusing prior research analysis d. recombining effective statistical tests